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Calculation of improved features of distributed-feedback tapered master-oscillator power-amplifiers
/forschung/publikationen/calculation-of-improved-features-of-distributed-feedback-tapered-master-oscillator-power-amplifiers
Summary form only given. During recent years, compact lasers emitting single-frequency, diffraction limited continuous-wave CW beams at an optical power of several Watts have received considerable…
190-fs Semiconductor Disk Laser and Tapered Diode Amplifier with Ultrafast Pulse Picking
/forschung/publikationen/190-fs-semiconductor-disk-laser-and-tapered-diode-amplifier-with-ultrafast-pulse-picking
Optically-pumped semiconductor disk lasers (SDLs) promise to be versatile femtosecond sources, because they can be tailored for almost any wavelength. Very recently, by passive mode-locking of SDLs…
Determination of the thermal lensing in a broad area semiconductor laser amplifier
/forschung/publikationen/determination-of-the-thermal-lensing-in-a-broad-area-semiconductor-laser-amplifier
We propose a simple experiment that allows to measure the thermal lens created in a semiconductor laser amplifier by current pumping of the device. In this technique, we make use of the deviation of…
633nm tapered diode lasers with external wavelength stabilisation for HeNe applications
/forschung/publikationen/633nm-tapered-diode-lasers-with-external-wavelength-stabilisation-for-hene-applications
We will present novel 633 nm diode lasers operating continuous wave with lateral, using a taper laser geometry, and longitudinal, using external volume Bragg gratings, mode filtering at room…
Beam properties of gain-guided array structures from low to high power operation
/forschung/publikationen/beam-properties-of-gain-guided-array-structures-from-low-to-high-power-operation
Here the behaviour of 1060 nm and 1150 nm gain-guided array lasers from low to high power operation is investigated, showing the limitations of these devices for external V-shaped cavity…
Sub-200-fs Passively Mode-Locked Semiconductor Disk Laser
/forschung/publikationen/sub-200-fs-passively-mode-locked-semiconductor-disk-laser
The femtosecond laser performance of an optically pumped InGaAs-AlGaAs disk laser emitting around 1.04 µm was studied. Using a saturable absorber with a surface-near quantum well, 190-fs-pulses…
Highly Robust X-Band LNA with Extremely Short Recovery Time
/forschung/publikationen/highly-robust-x-band-lna-with-extremely-short-recovery-time
GaN-based low-noise amplfiers (LNAs) recently were shown to provide high ruggedness together with low noise figure. These LNAs allow for simplified receiver architectures, e.g., since no limiter is…
Single-Mode Q-Switched Pulse Generation from a Tapered DBR Laser
/forschung/publikationen/single-mode-q-switched-pulse-generation-from-a-tapered-dbr-laser
Q-switching of a 1060 nm quantum-well tapered DBR laser is investigated. Single-mode optical pulses are generated with a peak power of 3.4W, pulse energy of 1nJ and a FWHM spectral width of…
Microsystem light source at 671 nm for shifted excitation Raman difference spectroscopy
/forschung/publikationen/microsystem-light-source-at-671-nm-for-shifted-excitation-raman-difference-spectroscopy
A novel compact wavelength stabilized diode laser system at 671 nm on a micro-optical bench as a light source for shifted excitation Raman difference spectroscopy (SERDS) is presented. Two…
Hand-held Raman Sensor Head for In-situ Characterization of Meat Quality Applying a Microsystem 671 nm Diode Laser
/forschung/publikationen/hand-held-raman-sensor-head-for-in-situ-characterization-of-meat-quality-applying-a-microsystem-671-nm-diode-laser
A hand-held Raman sensor head was developed for the in-situ characterization of meat quality. As light source, a microsystem based external cavity diode laser module (ECDL) emitting at 671 nm…